5305-00-401-4379

Find complete technical information, availability, and procurement data for: 5305-00-401-4379
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-401-4379

Item Name Code

18257

Assigment Date

01/15/1972 (54 years ago)

1.438 inches minimum and 1.500 inches maximum fastener length, hexagon head style, 2a thread class, right-hand thread direction, 0.938 inches minimum thread length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.938 inches minimum
Fastener Length: 1.438 inches minimum and 1.500 inches maximum
Head Style: hexagon
Head Height: 0.150 inches minimum and 0.163 inches maximum
Width Between Flats: 0.428 inches minimum and 0.438 inches maximum
Hole Diameter: 0.064 inches nominal
Nominal Thread Diameter: 0.250 inches
Hole Quantity: 1
Hole Type: drilled
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 70000 pounds per square inch
Hardness Rating: 230.0 rockwell b maximum overall
Minimum Yield Strength: 40000 pounds per square inch
Hole Configuration Style: hexagon flats
Surface Finish: 63.0 microinches threads
Material: steel comp 403 or steel comp 405 or steel comp 410 or steel comp 414 or steel comp 416 or steel comp 416se or steel comp 420 or steel comp 430 or steel comp 431 or steel comp 440a or steel comp 440b or steel comp 440c or steel comp 446 or steel comp 430f overall
Material Document And Classification: 66 fed std all material responses overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 2 type and 10p style

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
MS51099-10	Hexagon Head Cap Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-00-401-4379?

The FSCG of the NSN 5305-00-401-4379 is 5305

Does the NSN 5305-00-401-4379 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-401-4379 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5305-00-401-4379 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-401-4379 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5305-00-401-4379 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Sat, Jan 15, 1972